P0174 Honda Hr-V
System Too Lean (Bank 2) · Powertrain Code · High · Repair: Moderate
What is P0174?
The engine is running lean on bank 2. Same causes as P0171 but affecting the opposite cylinder bank on V-engines.
When the Honda Hr-V triggers code P0174 (system too lean (bank 2)), it typically points to an issue in the powertrain system. This is a high severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the Honda Hr-V.
This repair is rated moderate, meaning some experience and specialty tools required.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Honda Hr-V.
Common Causes on Honda Hr-V
- Intake manifold gasket leak on bank 2 of 3.5L V6 Pilot
- PCV valve failure on passenger side of 3.5L V6
- Vacuum leak at intake runner on bank 2
- Bank 2 fuel injector flow restriction
- Mass airflow sensor reading inaccurately
Symptoms
- Rough idle especially when cold
- Hesitation or stumble on acceleration
- Engine surging at steady throttle
- Lean misfire under load
- Poor fuel economy
- Check engine light illuminated
Notes for Honda Hr-V
P0174 is uncommon on 4-cylinder CR-V and HR-V models as they only have one bank. Pilot V6 models can develop bank 2 lean codes from intake gasket deterioration.